Klondike Solitaire is probably the best-known solitaire in
the world. Many people don't even realize that other games exist.
Though the name may not be familiar, the game itself certainly is.
This is due in no small part to Microsoft's inclusion of the
game in every version of Windows, though their naming the game
“Microsoft Solitaire” only added to the confusion about the game's proper name.

Klondike Solitaire is probably the best-known solitaire in
the world. Many people don't even realize that other games exist.
Though the name may not be familiar, the game itself certainly is.
This is due in no small part to Microsoft's inclusion of the
game in every version of Windows, though their naming the game
“Microsoft Solitaire” only added to the confusion about the game's proper name.